Fix linking problem on bsd53

 - See article http://archive.netbsd.se/?ml=freebsd-current&a=2004-07&m=257561
  or http://www.geocrawler.com/archives/3/254/2003/3/450/10409564/

configure.in

@@ -351,6 +351,15 @@ then
   if echo $CXX | grep gcc > /dev/null 2>&1
   then
     GCC_VERSION=`gcc -v 2>&1 | grep version | sed -e 's/[[^0-9. ]]//g; s/^ *//g; s/ .*//g'`
+    case $SYSTEM_TYPE in
+      *freebsd*)
+        # The libsupc++ library on freebsd with gcc 3.4.2 is dependent on 
+        # libstdc++, disable it  since other solution works fine
+        GCC_VERSION="NOSUPCPP_$GCC_VERSION"
+      ;;
+      *) 
+      ;;
+    esac
     echo "Using gcc version '$GCC_VERSION'"
     case "$GCC_VERSION" in
       3.4.*|3.5.*)